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it should work.My suggestions:1- update your software to V12 SP1 upd2.2 - in the HMI connections definition be sure that stay on access point of application "S7online". If possible post a printscreen of it.3 - In PG/PC interface (control panel) set PG/PC = PLCSim 1200/1500 (like you have alread post)4 - Start the PLC simulation5 - Start the HMI simulation.

Dear Mr Pegaia,

Good Day for You

i faced problem like that but with a real CPU300 and Wincc RT advanced i cannot see the HMI connection Online with the plc..... First you should Know what hardware and software i have..1- CPU 315 2PN/DP2- PC3- TIA portal Wincc Advanced V12 SP1 Update4 + Step7 Professional V12 SP1 Update4

i made the IP configuration for my PC as IN HMI project connection ( CP IE general ) 192.168.0.2

i made the IP Configuration for CPU 315 in the PLC 192.168.0.3

now when i make online Simulation without PLC hardware for both the cpu and for the Wincc RT adv every thing be communicated very well , but when i make true Online with the hardware PLC and the project i can see only the CPU 315 very well but i cannot reach the IE general CP IE any where ..So please tell me if there is something missing or for any update enable me to communicate active the CPU with my PC which have the SCADA project??